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SN74AS257D

16 Terminations4.5V~5.5V 16 Pin 74AS257 Signal switch74AS Series 1 Outputs4 Functions


  • Manufacturer: Texas Instruments
  • Origchip NO: 815-SN74AS257D
  • Package: 16-SOIC (0.154, 3.90mm Width)
  • Datasheet: PDF
  • Stock: 171
  • Description: 16 Terminations4.5V~5.5V 16 Pin 74AS257 Signal switch74AS Series 1 Outputs4 Functions(Kg)

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Details

Tags

Parameters
Factory Lead Time 6 Weeks
Lifecycle Status ACTIVE (Last Updated: 2 days ago)
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 16-SOIC (0.154, 3.90mm Width)
Number of Pins 16
Weight 141.690917mg
Operating Temperature 0°C~70°C
Packaging Tube
Series 74AS
JESD-609 Code e4
Pbfree Code yes
Part Status Active
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 16
Type Multiplexer
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Technology TTL
Voltage - Supply 4.5V~5.5V
Terminal Position DUAL
Terminal Form GULL WING
Peak Reflow Temperature (Cel) 260
Number of Functions 4
Supply Voltage 5V
Base Part Number 74AS257
Pin Count 16
Number of Outputs 1
Operating Supply Voltage 5V
Circuit 4 x 2:1
Power Supplies 5V
Number of Channels 4
Load Capacitance 50pF
Power Dissipation 1.3W
Number of Bits 2
Propagation Delay 6 ns
Family AS
Number of Inputs 8
Output Characteristics 3-STATE
Current - Output High, Low 15mA 48mA
Supply Type Single
Bandwidth 125MHz
Output Polarity TRUE
Voltage Supply Source Single Supply
Independent Circuits 1
Height 1.75mm
Length 9.9mm
Width 3.91mm
Thickness 1.58mm
Radiation Hardening No
REACH SVHC No SVHC
RoHS Status ROHS3 Compliant
Lead Free Lead Free

SN74AS257D Overview


For the purpose of saving board space, digital switch is included in the 16-SOIC (0.154, 3.90mm Width).Tube represents its packaging.In terms of mounting, digital switch ic uses the method of Surface Mount.For the analog part of the multiplexers, an IC Multiplexer is used.By keeping the operating temperature at 0°C~70°C, turn signal switch will not be affected by external factors.Using a 4.5V~5.5V supply voltage provides digital controlled switch's superior flexibility for designers.Multiplexers of the 74AS series can be used in a wide range of applications.Its basic configuration includes terminations in the 16 range.The base part number is 74AS257, which is also useful when looking up signal switch's related components.The voltage supplied for multiplexer's system is 5V.multiplexer's systemThis turn signal switch has a total of 16 component pins.A conductor terminates at GULL WING.The supply type of this multiplexer ic is Single.A total of 16 pins are configured on this board.It is positioned in the direction of Surface Mount.The logic switch is included into the family of AS.In the signal multiplexer, there are 2 bits available.During mux switch's normal operation, 5V is provided with a power supply.As a result, the turn signal switch consists of 1 outputs.The performance of the multiplexers of a system can be reliably achieved with a supply voltage of 5V.There are 8 inputs provided in this multiplexer.For transmission, there are 4 channels in the turn signal switch's circuit.

SN74AS257D Features


Supplied in the 16-SOIC (0.154, 3.90mm Width) package
Adopting a supply type of Single
Power supplies of 5V
Operating with the supply voltage of 5V

SN74AS257D Applications


There are a lot of Texas Instruments SN74AS257D Signal Switches / Multiplexers / Decoders applications.

  • Memory system of computers
  • Encrypted communications system
  • Data demultiplexing
  • CPU memory location identification
  • D/A converters
  • Electronics industry
  • Data-routing applications
  • To select different task for memory in microprocessor memory systems
  • Logic gates for other digital devices
  • Code conversion